'use strict'

const path = require('path')
const defaultSettings = require('./src/settings.js')

function resolve(dir) {
    return path.join(__dirname, dir)
}

const name = defaultSettings.title || '统一门户管理后台' // page title

//如果您的端口设置为80，
//使用管理员权限执行命令行。
//例如，Mac：sudo npm run
//您可以通过以下方法更改端口：
//port = 6700 yarn dev或npm run dev --port = 6700
const port = process.env.port || process.env.npm_config_port || 6700 // dev port

// All configuration item explanations can be find in https://cli.vuejs.org/config/
module.exports = {
    /**
     *如果您打算在子路径下部署站点，则需要设置publicPath，
     *例如GitHub Pages。如果您打算将网站部署到https://foo.github.io/bar/，
     *然后publicPath应该设置为“ /bar /”。
     *在大多数情况下，请使用'/'！
     *详细信息：https://cli.vuejs.org/config/#publicpath
     */
    publicPath: '/',
    outputDir: 'dist',
    assetsDir: 'static',
    lintOnSave: process.env.NODE_ENV === 'development',
    productionSourceMap: false,
    devServer: {
        port: port,
        open: true,
        overlay: {
            warnings: false,
            errors: true
        },
        proxy: {
            // 开发模式模拟跨域 例如： 192.168.2.44:8000
            // detail: https://cli.vuejs.org/config/#devserver-proxy
            [process.env.VUE_APP_BASE_API]: {
                target: `/`,
                changeOrigin: true,
                pathRewrite: {
                    ['^' + process.env.VUE_APP_BASE_API]: ''
                }
            }
        }

    },
    configureWebpack: {
        //在webpack的名称字段中提供应用程序的标题，以便
        //可以在index.html中对其进行访问以注入正确的标题。
        name: name,
        resolve: {
            alias: {
                '@': resolve('src')
            }
        },
        plugins: []
    },
    chainWebpack(config) {

        // set svg-sprite-loader
        config.module
            .rule('svg')
            .exclude.add(resolve('src/icons'))
            .end()
        config.module
            .rule('icons')
            .test(/\.svg$/)
            .include.add(resolve('src/icons'))
            .end()
            .use('svg-sprite-loader')
            .loader('svg-sprite-loader')
            .options({
                symbolId: 'icon-[name]'
            })
            .end()

        // set preserveWhitespace
        config.module
            .rule('vue')
            .use('vue-loader')
            .loader('vue-loader')
            .tap(options => {
                options.compilerOptions.preserveWhitespace = true
                return options
            })
            .end()

        config
            // https://webpack.js.org/configuration/devtool/#development
            .when(process.env.NODE_ENV === 'development',
                config => config.devtool('cheap-source-map')
            )

        config
            .when(process.env.NODE_ENV !== 'development',
                config => {
                    config
                        .optimization.splitChunks({
                            chunks: 'all',
                            cacheGroups: {
                                libs: {
                                    name: 'chunk-libs',
                                    test: /[\\/]node_modules[\\/]/,
                                    priority: 10,
                                    chunks: 'initial' // only package third parties that are initially dependent
                                },
                                elementUI: {
                                    name: 'chunk-elementUI', // split elementUI into a single package
                                    priority: 20, // the weight needs to be larger than libs and app or it will be packaged into libs or app
                                    test: /[\\/]node_modules[\\/]_?element-ui(.*)/ // in order to adapt to cnpm
                                },
                                commons: {
                                    name: 'chunk-commons',
                                    test: resolve('src/components'), // can customize your rules
                                    minChunks: 3, //  minimum common number
                                    priority: 5,
                                    reuseExistingChunk: true
                                }
                            }
                        })
                    config.optimization.runtimeChunk('single')
                }
            )
    }
}
